Hayward VR1000 Stratum Vacuum Release System with Timer Stratum vacuum release system with timer Designed to provide an additional layer of protection against body suction entrapment Capable of monitoring suction lines for single speed or two speed pumps with or without a booster pump that share a common suction line Complete internal system test during every start-up prior to the monitoring phase Automatic restart the system in protection mode to eliminate nuisance tripping